diff --git a/ffmpeg-myth.scm b/ffmpeg-myth.scm
index a072b4b..60e3339 100755
--- a/ffmpeg-myth.scm
+++ b/ffmpeg-myth.scm
@@ -508,7 +508,7 @@
 	 (concat (simple-format #f "ffconcat version 1.0\nfile ~a/~a\nfile ~a/~a\n" recordings-directory bn1 recordings-directory bn2))
 	 (port (mkstemp! (mythconverg-input-file-name)))
 	 (tmpfile (port-filename port))
-	 (cmd (simple-format #f "~a -y -safe 0 -f concat -i ~a -codec copy -map 0 ~a/~a && touch --reference='~a/~a' ~a/~a && mv ~a/~a ~a/~a.premerge && mv ~a/~a ~a/." ffmpeg-bin tmpfile working-directory bn1 recordings-directory bn1 working-directory bn1 recordings-directory bn1 recordings-directory bn1 working-directory bn1 recordings-directory)))
+	 (cmd (simple-format #f "~a -y -safe 0 -f concat -i ~a -codec copy -map 0 -map -0:d ~a/~a && touch --reference='~a/~a' ~a/~a && mv ~a/~a ~a/~a.premerge && mv ~a/~a ~a/." ffmpeg-bin tmpfile working-directory bn1 recordings-directory bn1 working-directory bn1 recordings-directory bn1 recordings-directory bn1 working-directory bn1 recordings-directory)))
     (simple-format port concat) (force-output port) (close-port port)
     (shell-command-to-string cmd)
     (mythutil-rebuild (re-create-record-data (list (cons 'chanid chanid) (cons 'starttime starttime))))